If you want an approximately-public-domain license that pokes fun at the officious and arbitrary ideas lawyers hold, and that those lawyers say isn't officious

If you want an approximately-public-domain license that pokes fun at the officious and arbitrary ideas lawyers hold, and that those lawyers say isn't officious enough, you want WTFPL. If you want an approximately-public-domain license that seems pretty sincere but the same lawyers say isn't officious enough, you want Unlicense. If you want an approximately-public-domain license that lawyers seem to think is quite nice, but that's more for cultural work than software, and whose creators don't recommend it be used for software, you want CC0. If you want an approximately-public-domain license with a much more famous sibling, and plenty of lawyers say the sibling is good, you want 0BSD.